Welcome to the clinical clerkship with the PCOM Department of Ophthalmology.
Program Director: David M. Ringel, D.O.
Co-Program Director: Kenneth C. Heist, D.O.
1. Gain perspectives on ophthalmic basic science & clinical ophthalmology.
2. Introduction to the key principles underlying ocular structure, function, and pathology.
3. Practical exposure to ophthalmic disease, patient care, and treatment strategies.
4. Observation of various types of ophthalmic procedures and surgery.
As a student you will, at your own pace, learn to take a focused ophthalmic history,
examine patients, and assist with in-hospital consultations. You will also be introduced
to ophthalmic surgery, including cataracts, cornea, glaucoma, retina and oculoplastics.
This is a "hands on" rotation and we consider our students part of the eye clinic
Our residents and attending physicians gather routinely for journal club. Activities
at these meetings vary and include case discussions, journal topics, presentation
of landmark research publications, and wet labs. Finally, formal lectures occur each
morning at Wills Eye Institute. In addition to these formal daily lectures, there
is weekly tumor conference and retina imaging conference – also at Wills. Attendance
at the Wills Eye Institute conferences is not mandatory but highly recommended. You
may wish to preview the lectures held during your rotation by going to www.willseye.org and clicking on the month’s bulletin under CME. You will have the opportunity to
spend a few clinic days at Wills while on rotation with us.
While on our service, you should be motivated to improve your skills in ophthalmic
history and examination. Specifically, we want you to learn slit lamp biomicroscopy,
direct ophthalmoscopy, indirect ophthalmoscopy, and applanation tonometry. Towards
the end of your rotation, we want you to gain enough skill to primarily assess selected
We want to engage you not only clinically but academically. Therefore, the student
will make one 10–15 minute presentation on the topic of his or her choice to the residents
and attending physicians on service. This may be as formal as a PowerPoint lecture
or as simple as a discussion with a hand-out. Either way, we just want you to learn.
Your rotation will entail a varied experience with the attendings with whom we rotate.
The main preceptor will be Dr. Heist, comprehensive ophthalmologist. He is co-program
director. Our other main sites are Lankenau Hospital which provides comprehensive
ophthalmology, resident clinic, oculoplastics, neuro-ophthalmology, and retina. The
Moore Eye Institute provides various subspecialties including comprehensive ophthalmology,
cornea, glaucoma, retina and pediatrics. There are two other resident clinics in south
Philadelphia in which you may attend during your rotation.
The three-year ophthalmology residency program at Philadelphia College of Osteopathic
Medicine prepares residents to be confident and well-qualified in both ophthalmologic
surgical procedures and ophthalmologic office practice. It is designed so that residents,
through comprehensive didactic and clinical training, meet the basic requirements
for board certification in ophthalmology.
During internship, the ophthalmology PGY-1 resident spends two full clinical months
on the ophthalmology service and is encouraged to participate in resident clinic throughout
the year. A basic science course beginning the first year leads to observation of
cases, participation in patient care and review of radiologic films. The first year
resident also partakes in the introductory course and a 1 month pathology rotation
held at Wills Eye along with the other residencies in the Philadelphia area. Instrumentation
study and wet lab prepare the resident to perform some surgical and laser procedures
under supervision. During the second year, residents see patients in the clinic and
gain increasingly varied surgical experience with cataract, cornea and advanced anterior
segment surgery, glaucoma, vitreo-retinal surgery, strabismus, blepharoplasty, ptosis
repair, ectropion/entropion, lid reconstruction, and orbital surgery for fractures,
thyroid disease, tumors and more.
During the third year, residents are responsible for pre- and post-operative patient
care and to expand their surgical knowledge in all the subspecialties mentioned above.
The resident performs surgeries of greater complexity and assists attending physicians
on additional cases. Third-year residents are also responsible for training medical
students, interns and junior ophthalmology residents in the clinics.
David M Ringel D.O.
Program Director PCOM Ophthalmology
Kenneth Heist, D.O.
Co-Program Director PCOM Ophthalmology
Douglas Mazzuca Jr D.O. PGY-4
Douglas Mazzuca Jr. D.O. is the Chief Resident with the Philadelphia College of Osteopathic
Medicine. Originally from Hockessin, DE, Douglas earned a bachelor's degree in mechanical
engineering from Villanova University. After working for a few years in construction
and patent law in Washington D.C., Douglas decided to switch career paths and attend
medical school. He graduated from Philadelphia College of Osteopathic Medicine in
2012. He is currently the Chief Resident and plans to join his father’s ophthalmology
practice after graduating.
On his free time Douglas likes skiing, playing tennis, cooking, and "going down the
shore" in the summer.
Charisse Chin, D.O, PGY-3
Charisse M. Chin, DO, MPH is the PGY-3 Ophthalmology Resident with the Philadelphia
College of Osteopathic Medicine. She originally hails from Southern California and
received her undergraduate degree in Health Promotion and Disease Prevention Studies
from the University of Southern California. Her Master of Public Health degree was
obtained from Tulane University School of Public Health and Tropical Medicine. She
worked in both non-profit and private organizations as a Program Director before returning
to medical school at A.T. Still University School of Osteopathic Medicine in Mesa,
Charisse enjoys relaxing with her family, reading, pilates, dance, and going to the
beach in her free time.
Bradley O'Neill, D.O., PGY-2
Bradley O'Neill D.O. is the PGY-2 Ophthalmology Resident with the Philadelphia College
of Osteopathic Medicine. Originally from Clearwater, FL, he earned his Bachelor's
Degree in Biomedical Sciences from the University of South Florida in 2008. Bradley
went on to complete his medical training at Lake Erie College of Osteopathic Medicine
in Bradenton, FL. Upon graduating from LECOM-Bradenton in 2013, he completed a Transitional
Year Residency in Youngstown, OH where he was awarded first place for his research
presentation on Vitreomacular Traction at the annual Resident Research Day. In his
free time, Bradley enjoys staying active outdoors, cooking, and playing sports.
Remington Horesh, D.O., PGY- 1
Remington Horesh, D.O. is the PGY-1 Ophthalmology Resident with the Philadelphia College
of Osteopathic Medicine. Growing up in sunny South Florida, he earned his Bachelor's
Degree in Biotechnology along with a minor in Chemistry from the University of Florida.
He subsequently received his medical degree at Lake Erie College of Osteopathic Medicine's
Bradenton campus in 2015. After hours, Remington spends his time playing music, traveling,
and training in the Martial Arts.
Jacqueline R. Carrasco, M.D., F.A.C.S
Residency Coordinator for Lankenau Hospital
Oculoplastics and Orbital Surgery
Ralph J. DiGiovanni, Jr., M.D.
Lankenau Resident Clinic Director
Hugo M. Linares, D.O.
Robert B. Penne, M.D., F.A.C.S.
Oculoplastics and Orbital Surgery
Louis X Santore, M.D.
Chief of ophthalmology Lankenau Hospital
Robert C Sergott, M.D.
Moore Eye Institute/Hospital Affiliations
Cynthia Alley, M.D
Residency Coordinator for Moore Eye Institute
Pediatrics and Strabismus Surgery
Nancy Crawford, M.D.
Leonard H. Ginsburg, M.D., C.D.E
Founder of Moore Eye
Kenneth C. Heist, D.O.
Ravi Patel, M.D., M.B.A.
Director of Resident Education at Moore Eye Institute
Cornea/Advanced anterior segment surgery
Deepta Rawat, M.D., M.S.
South Street and Roosevelt Blvd Clinic:
Jurij R. Bilyk M.D.
Oculoplastics and Orbital Surgery
Jennifer K. Hall M.D.
We look forward to getting to know you. Please contact us through the email address
below with any questions that you may have or to set up a rotation.